CN108332561B - A kind of method of coming out of the stove of new isostatic pressing formed graphite product - Google Patents
A kind of method of coming out of the stove of new isostatic pressing formed graphite product Download PDFInfo
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- CN108332561B CN108332561B CN201711366521.9A CN201711366521A CN108332561B CN 108332561 B CN108332561 B CN 108332561B CN 201711366521 A CN201711366521 A CN 201711366521A CN 108332561 B CN108332561 B CN 108332561B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/515—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics
- C04B35/52—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on non-oxide ceramics based on carbon, e.g. graphite
- C04B35/522—Graphite
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D9/00—Cooling of furnaces or of charges therein
- F27D2009/007—Cooling of charges therein
Abstract
The present invention relates to a kind of method of coming out of the stove of new isostatic pressing formed graphite product, including whole furnace, the first insulation material is grabbed, the second insulation material is grabbed, grabs top resistance material, grabs product, during grabbing the first insulation material, the first insulation material point 6 batches has been grabbed；When not grabbing the 1st batch of the first insulation material, the cooling rate of product is 0-0.5 DEG C/h；When grabbing the 1st batch of the first insulation material but not grabbing the 2nd batch of the first insulation material, the cooling rate of product is 0.5-1 DEG C/h；When grabbing the 2nd batch of the first insulation material but not grabbing the 3rd batch of the first insulation material, the cooling rate of product is 1-1.5 DEG C/h；When grabbing the 3rd batch of the first insulation material but not grabbing the 4th batch of the first insulation material, the cooling rate of product is 1.5-2 DEG C/h；When grabbing the 4th batch of the first insulation material but not grabbing the 5th batch of the first insulation material, the cooling rate of product is 2-3 DEG C/h, and when grabbing the 5th batch of the first insulation material but not grabbing the 6th batch of the first insulation material, the cooling rate of product is 3-4 DEG C/h.Method of the invention shrinks product equilibrium, avoids crackle caused by stress difference.
Description
Technical field
The present invention relates to a kind of methods of coming out of the stove of new isostatic pressing formed graphite product.
Background technique
Isostatic pressing formed graphite is a kind of New graphite material to grow up the sixties in last century, has a series of excellent property
Energy.For example, isostatic pressing formed graphite is heat-resist, and under an inert atmosphere, its mechanical strength does not reduce not only as the temperature rises,
It increases instead, reaches peak at 2500 DEG C or so；Compared with common graphite, fine structure is fine and close, and uniformity is good；Heat
The coefficient of expansion is very low, has excellent thermal shock resistance；Isotropism；Chemical corrosion resistance is strong, heating conduction and electric conductivity
Well；With excellent machining property.Just because of have this series of excellent properties, isostatic pressing formed graphite metallurgy,
The fields such as chemistry, electrical, aerospace and atomic energy industry are used widely, moreover, with the development of science and technology, application
Field is also constantly expanding.
It is cracked it is found through experiment that the existing method of coming out of the stove often results in product, affects the yield rate of product.
In view of this, the present invention is specifically proposed.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of coming out of the stove of new isostatic pressing formed graphite product, to improve the finished product of product
Rate.
To achieve the above object, the present invention includes the following steps:
A kind of method of coming out of the stove of new isostatic pressing formed graphite product, including whole furnace, grab the first insulation material, grab the second insulation material,
It grabs top resistance material, grab product, during grabbing the first insulation material, the first insulation material point 6 batches has been grabbed；The 1st batch first heat preservation is not grabbed
When material, the cooling rate of product is 0-0.5 DEG C/h；When grabbing the 1st batch of the first insulation material but not grabbing the 2nd batch of the first insulation material, product
Cooling rate be 0.5-1 DEG C/h；When grabbing the 2nd batch of the first insulation material but not grabbing the 3rd batch of the first insulation material, the cooling speed of product
Degree is 1-1.5 DEG C/h；When grabbing the 3rd batch of the first insulation material but not grabbing the 4th batch of the first insulation material, the cooling rate of product is 1.5-2
℃/h；When grabbing the 4th batch of the first insulation material but not grabbing the 5th batch of the first insulation material, the cooling rate of product is 2-3 DEG C/h, grabs the 5th
When criticizing the first insulation material but not grabbing the 6th batch of the first insulation material, the cooling rate of product is 3-4 DEG C/h.
A temperature-fall period on the process nature of coming out of the stove of product, for avoid product internal stress it is excessive cause it is cracked,
The prior art generally using cooling down at a slow speed, but do not prevent actually crackle generation, which is because, product cooling
Cheng Zhong, at a temperature of different, the active degree of crystal is different, and shrinkage amplitude is different, and unbalanced contraction can generate stress difference
It is different, lead to the generation of crackle, to solve the above problems, the present invention is using interim cooling, i.e., higher in product temperature, crystal is living
Jump degree is higher, when being easier to shrink, to control shrinkage degree in a certain range, using lower cooling rate；In product temperature
Spend lower, crystal active degree is lower, when being less susceptible to shrink, does not change for control shrinkage degree, using faster cooling
Speed, the present invention by control product equilibrium shrink, avoid stress difference cause it is cracked.
During grabbing the second insulation material, the second insulation material point 4 batches has been grabbed；When not grabbing the 1st batch of the second insulation material, the drop of product
Warm speed is 0-2 DEG C/h；When grabbing the 1st batch of the second insulation material but not grabbing the 2nd batch of the second insulation material, the cooling rate of product is 2-3
℃/h；When grabbing the 2nd batch of the second insulation material but not grabbing the 3rd batch of the second insulation material, the cooling rate of product is 3-5 DEG C/h；Grab the 3rd
When criticizing the second insulation material but not grabbing the 4th batch of the second insulation material, the cooling rate of product is 2-5 DEG C/h.
It is demonstrated experimentally that above-mentioned condition reduces crackle substandard product.
Preferably, during grabbing the second insulation material, a collection of second insulation material is grabbed every 105 hours, totally 420 hours；
0-100 hours, the cooling rate of product was 0-0.5 DEG C/h, and 101-105 hours, the cooling rate of product was 1-2 DEG C/h；
316-320 hours, the cooling rate of product was 2-3 DEG C/h；321-420 hours, the cooling rate of product was 3-5 DEG C/h.
During grabbing top resistance material, top resistance material point 3 batches has been grabbed, when not grabbing the 1st batch of top resistance material, the drop of product
Warm speed is 0-0.5 DEG C/h；When grabbing the 1st batch of top resistance material but not grabbing the 2nd batch of top resistance material, the cooling rate of product is
1-3℃/h；When grabbing the 2nd batch of top resistance material but not grabbing the 3rd batch of top resistance material, the cooling rate of product is 1-4 DEG C/h.
It is demonstrated experimentally that above-mentioned condition reduces crackle substandard product.
Preferably, during grabbing top resistance material, a collection of top resistance material is grabbed every 80 hours, totally 240 hours, the
81-100 hours, the cooling rate of product was 1-2 DEG C/h；101-160 hours, the cooling rate of product was 2-3 DEG C/h；The
161-200 hours, the cooling rate of product was 3-4 DEG C/h；201-240 hours, the cooling rate of product was 1-2 DEG C/h.
That is, 0-40 hours, the cooling rate of product was 0-0.5 DEG C/h during grabbing the first insulation material；41-80 is small
When, the cooling rate of product is 0.5-1 DEG C/h；81-120 hours, the cooling rate of product was 1-1.5 DEG C/h；121-160
Hour, the cooling rate of product is 1.5-2 DEG C/h；In 161-200 hours, the cooling rate of product is 2-3 DEG C/h；201-
240 hours, the cooling rate of product was 3-4 DEG C/h.
During grabbing the second insulation material, 0-100 hours, the cooling rate of product was 0-0.5 DEG C/h；101-105 is small
When, the cooling rate of product is 1-2 DEG C/h；106-210 hours, the cooling rate of product was 2-3 DEG C/h；211-315 is small
When, the cooling rate of product is 3-5 DEG C/h；316-320 hours, the cooling rate of product was 2-3 DEG C/h；321-420 is small
When, the cooling rate of product is 3-5 DEG C/h.
During grabbing top resistance material, 0-80 hours, the cooling rate of product was 0-0.5 DEG C/h；81-100 hours,
The cooling rate of product is 1-2 DEG C/h；101-160 hours, the cooling rate of product was 2-3 DEG C/h, 161-200 hours,
The cooling rate of product is 3-4 DEG C/h；201-240 hours, the cooling rate of product was 1-2 DEG C/h.
It grabs in product process, the temperature difference on resistance material top and lower part between product and product is less than or equal to 3 DEG C.
The temperature difference on resistance material top and lower part between product and product, that is, after having grabbed the resistance material between product and product
The internal-external temperature difference of product, the present invention avoid the generation of crackle by the internal-external temperature difference of reduction product.
Specifically, the control of cooling rate is accomplished by the following way in the present invention:
First insulation material with a thickness of 600mm, during grabbing the first insulation material, the first insulation material points 6 times have been grabbed, has been grabbed
Thickness is followed successively by 90mm, 90mm, 90mm, 90mm, 90mm, 150mm, and every 40h is grabbed 1 time；The every 1h of 0-160h sprinkles water 4 times, watering
Measuring is 0.085L/ ㎡, 5 minutes every time；The every 1h of 161-240h sprinkles water 4 times, and watering amount is 0.085L/ ㎡, and 5 minutes every time.
Second insulation material with a thickness of 200mm, during grabbing the second insulation material, the second insulation material points 4 times have been grabbed, has been grabbed
Thickness is followed successively by 50mm, 50mm, 50mm, 50mm, and every 105h is grabbed 1 time；0-100h freely cools down；The every 2h watering of 101-320h
1 time, watering amount be 0.085L/ ㎡, 5 minutes every time；321-420h, every 1h sprinkle water 1 time, and watering amount is 0.085L/ ㎡, every time
3 minutes.
Top resistance material with a thickness of 150mm, during grabbing top resistance material, top resistance material points 3 times have been grabbed, has been grabbed
Thickness is followed successively by 50mm, 50mm, 50mm, and every 80h is grabbed 1 time；0-100h freely cools down；The every 2h of 101-200h sprinkles water 1 time, spills
Water be 0.085L/ ㎡, 5 minutes every time；201-240h, every 1h sprinkle water 1 time, and watering amount is 0.085L/ ㎡, and 3 minutes every time.
The method of coming out of the stove of the invention has efficiently controlled the cooling rate of product, farthest reduces interiors of products and answers
Power liquidates, and discharges interiors of products stress slowly, improves the yield rate of product.
The first insulation material is grabbed after whole furnace 72h.
The product quality of above-mentioned condition is more preferably.
Top resistance material includes giving birth to metallurgical coke and ripe metallurgical coke, and the ratio of raw metallurgical coke and ripe metallurgical coke is 8:2；Raw metallurgy
The granularity of burnt and ripe metallurgical coke is 15-30mm.
Resistance material heat insulation effect under above-mentioned condition is more preferably.
The granularity of first insulation material and the second insulation material is 0.45-3mm.
Insulation material heat insulation effect under above-mentioned condition is more preferably.
The tapping temperature of product is lower than 15 DEG C.
Stable product quality under above-mentioned condition.
First insulation material is old insulation material, and the second insulation material is new insulation material.
Compared with prior art, the invention has the following beneficial effects:
A temperature-fall period on the process nature of coming out of the stove of product, for avoid product internal stress it is excessive cause it is cracked,
The prior art generally using cooling down at a slow speed, but do not prevent actually crackle generation, which is because, product cooling
Cheng Zhong, at a temperature of different, the active degree of crystal is different, and shrinkage amplitude is different, and unbalanced contraction can generate stress difference
It is different, lead to the generation of crackle, to solve the above problems, the present invention is using interim cooling, i.e., higher in product temperature, crystal is living
Jump degree is higher, when being easier to shrink, to control shrinkage degree in a certain range, using lower cooling rate；In product temperature
Spend lower, crystal active degree is lower, when being less susceptible to shrink, does not change for control shrinkage degree, using faster cooling
Speed, the present invention by control product equilibrium shrink, avoid stress difference cause it is cracked.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below to the technical side in embodiment
Case is clearly and completely described, and the following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention..
Embodiment 1
The first insulation material is grabbed after whole furnace 72h, during grabbing the first insulation material, 0-40 hours, the cooling rate of product was
0-0.5℃/h；41-80 hours, the cooling rate of product was 0.5-1 DEG C/h；81-120 hours, the cooling rate of product was
1-1.5℃/h；121-160 hours, the cooling rate of product was 1.5-2 DEG C/h；In 161-200 hours, the cooling of product
Speed is 2-3 DEG C/h；201-240 hours, the cooling rate of product was 3-4 DEG C/h；
The second insulation material is grabbed after having grabbed the first insulation material, during grabbing the second insulation material, 0-100 hours, the drop of product
Warm speed is 0-0.5 DEG C/h；101-105 hours, the cooling rate of product was 1-2 DEG C/h；106-210 hours, product
Cooling rate is 2-3 DEG C/h；211-315 hours, the cooling rate of product was 3-5 DEG C/h；316-320 hours, product
Cooling rate is 2-3 DEG C/h；321-420 hours, the cooling rate of product was 3-5 DEG C/h；
Top resistance material is grabbed after having grabbed the second insulation material, during grabbing top resistance material, 0-80 hours, the cooling of product
Speed is 0-0.5 DEG C/h；81-100 hours, the cooling rate of product was 1-2 DEG C/h；101-160 hours, the cooling of product
Speed is 2-3 DEG C/h, and 161-200 hours, the cooling rate of product was 3-4 DEG C/h；201-240 hours, the cooling of product
Speed is 1-2 DEG C/h；
Product is grabbed after having grabbed top resistance material.
Embodiment 2
The first insulation material is grabbed after whole furnace 72h, during grabbing the first insulation material, 0-40 hours, the cooling rate of product was
0-0.5℃/h；41-80 hours, the cooling rate of product was 0.5-1 DEG C/h；81-120 hours, the cooling rate of product was
1-1.5℃/h；121-160 hours, the cooling rate of product was 1.5-2 DEG C/h；In 161-200 hours, the cooling of product
Speed is 2-3 DEG C/h；201-240 hours, the cooling rate of product was 3-4 DEG C/h；
The second insulation material is grabbed after having grabbed the first insulation material, during grabbing the second insulation material, 0-100 hours, the drop of product
Warm speed is 0-0.5 DEG C/h；101-105 hours, the cooling rate of product was 1-2 DEG C/h；106-210 hours, product
Cooling rate is 2-3 DEG C/h；211-315 hours, the cooling rate of product was 3-5 DEG C/h；316-320 hours, product
Cooling rate is 2-3 DEG C/h；321-420 hours, the cooling rate of product was 3-5 DEG C/h；
Top resistance material is grabbed after having grabbed the second insulation material, during grabbing top resistance material, 0-80 hours, the cooling of product
Speed is 0-0.5 DEG C/h；81-100 hours, the cooling rate of product was 1-2 DEG C/h；101-160 hours, the cooling of product
Speed is 2-3 DEG C/h, and 161-200 hours, the cooling rate of product was 3-4 DEG C/h；201-240 hours, the cooling of product
Speed is 1-2 DEG C/h；
Product is grabbed after having grabbed top resistance material, the tapping temperature of product is lower than 15 DEG C.
Embodiment 3
The first insulation material is grabbed after whole furnace 72h, during grabbing the first insulation material, 0-40 hours, the cooling rate of product was
0-0.5℃/h；41-80 hours, the cooling rate of product was 0.5-1 DEG C/h；81-120 hours, the cooling rate of product was
1-1.5℃/h；121-160 hours, the cooling rate of product was 1.5-2 DEG C/h；In 161-200 hours, the cooling of product
Speed is 2-3 DEG C/h；201-240 hours, the cooling rate of product was 3-4 DEG C/h；
The second insulation material is grabbed after having grabbed the first insulation material, during grabbing the second insulation material, 0-100 hours, the drop of product
Warm speed is 0-0.5 DEG C/h；101-105 hours, the cooling rate of product was 1-2 DEG C/h；106-210 hours, product
Cooling rate is 2-3 DEG C/h；211-315 hours, the cooling rate of product was 3-5 DEG C/h；316-320 hours, product
Cooling rate is 2-3 DEG C/h；321-420 hours, the cooling rate of product was 3-5 DEG C/h；
Top resistance material is grabbed after having grabbed the second insulation material, during grabbing top resistance material, 0-80 hours, the cooling of product
Speed is 0-0.5 DEG C/h；81-100 hours, the cooling rate of product was 1-2 DEG C/h；101-160 hours, the cooling of product
Speed is 2-3 DEG C/h, and 161-200 hours, the cooling rate of product was 3-4 DEG C/h；201-240 hours, the cooling of product
Speed is 1-2 DEG C/h；
Product is grabbed after having grabbed top resistance material, the tapping temperature of product is lower than 15 DEG C.
Comparative example 1
Embodiment is identical as the Chinese patent application embodiment 1 application No. is 201010194587.6.
Experimental example 1
This experimental example has detected the crackle substandard product in embodiment 1-3 and comparative example 1, the results are shown in Table 1.
Table 1
| Crackle is unqualified | |
| Embodiment 1 | 0.5% |
| Embodiment 2 | 0.3% |
| Embodiment 3 | 0.4% |
| Comparative example 1 | 2.1% |
As can be seen from Table 1, compared with comparative example 1, the crackle rejected product of embodiment 1-3 is less.
The above is only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form, though
So the present invention has been disclosed as a preferred embodiment, and however, it is not intended to limit the invention, any to be familiar with technology people of the invention
Member without departing from the scope of the present invention, when the technology contents using above-mentioned prompt make it is a little change or be modified to
The equivalent embodiment of equivalent variations, but anything that does not depart from the technical scheme of the invention content, it is right according to the technical essence of the invention
Any simple modification, equivalent change and modification made by above embodiments, in the range of still falling within the present invention program.
Claims (13)
1. a kind of method of coming out of the stove of isostatic pressing formed graphite product, which is characterized in that including whole furnace, grab the first insulation material, grab the second guarantor
Temperature material grabs top resistance material, grabs product, and during grabbing the first insulation material, the first insulation material point 6 batches has been grabbed；The 1st batch first is not grabbed
When insulation material, the cooling rate of product is 0-0.5 DEG C/h；When grabbing the 1st batch of the first insulation material but not grabbing the 2nd batch of the first insulation material,
The cooling rate of product is 0.5-1 DEG C/h；When grabbing the 2nd batch of the first insulation material but not grabbing the 3rd batch of the first insulation material, the drop of product
Warm speed is 1-1.5 DEG C/h；When grabbing the 3rd batch of the first insulation material but not grabbing the 4th batch of the first insulation material, the cooling rate of product is
1.5-2℃/h；When grabbing the 4th batch of the first insulation material but not grabbing the 5th batch of the first insulation material, the cooling rate of product is 2-3 DEG C/h,
When grabbing the 5th batch of the first insulation material but not grabbing the 6th batch of the first insulation material, the cooling rate of product is 3-4 DEG C/h.
2. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that grab the second insulation material
In the process, the second insulation material point 4 batches has been grabbed；When not grabbing the 1st batch of the second insulation material, the cooling rate of product is 0-2 DEG C/h；Grab
1 batch of the second insulation material but when not grabbing the 2nd batch of the second insulation material, the cooling rate of product is 2-3 DEG C/h；Grab the 2nd batch second heat preservation
When expecting but not grabbing the 3rd batch of the second insulation material, the cooling rate of product is 3-5 DEG C/h；It grabs the 3rd batch of the second insulation material but does not grab
When 4 batches of the second insulation materials, the cooling rate of product is 2-5 DEG C/h.
3. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 2, which is characterized in that grab the second insulation material
In the process, a collection of second insulation material is grabbed every 105 hours, totally 420 hours；0-100 hours, the cooling rate of product was
0-0.5 DEG C/h, 101-105 hours, the cooling rate of product was 1-2 DEG C/h；316-320 hours, the cooling rate of product
For 2-3 DEG C/h；321-420 hours, the cooling rate of product was 3-5 DEG C/h.
4. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that grab top resistance material
In the process, top resistance material point 3 batches has been grabbed, and when not grabbing the 1st batch of top resistance material, the cooling rate of product is 0-0.5 DEG C/h；It grabs
1st batch of top resistance material but when not grabbing the 2nd batch of top resistance material, the cooling rate of product is 1-3 DEG C/h；Grab the 2nd batch of top electricity
Resistance material but when not grabbing the 3rd batch of top resistance material, the cooling rate of product is 1-4 DEG C/h.
5. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 4, which is characterized in that grab top resistance material
In the process, a collection of top resistance material is grabbed every 80 hours, totally 240 hours, 81-100 hours, the cooling rate of product was
1-2℃/h；101-160 hours, the cooling rate of product was 2-3 DEG C/h；161-200 hours, the cooling rate of product was
3-4℃/h；201-240 hours, the cooling rate of product was 1-2 DEG C/h.
6. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that grab product process
In, the temperature difference on resistance material top and lower part between product and product is less than or equal to 3 DEG C.
7. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that the first insulation material
With a thickness of 600mm, during grabbing the first insulation material, the first insulation material points 6 times have been grabbed, grabbed thickness be followed successively by 90mm, 90mm,
90mm, 90mm, 90mm, 150mm, every 40h are grabbed 1 time；The every 1h of 0-160h sprinkles water 4 times, and watering amount is 0.085L/ ㎡, and 5 points every time
Clock；The every 1h of 161-240h sprinkles water 4 times, and watering amount is 0.085L/ ㎡, and 5 minutes every time.
8. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that the second insulation material
With a thickness of 200mm, during grabbing the second insulation material, the second insulation material points 4 times have been grabbed, grabbed thickness be followed successively by 50mm, 50mm,
50mm, 50mm, every 105h are grabbed 1 time；0-100h freely cools down；The every 2h of 101-320h sprinkles water 1 time, and watering amount is 0.085L/
㎡, 5 minutes every time；321-420h, every 1h sprinkle water 1 time, and watering amount is 0.085L/ ㎡, and 3 minutes every time.
9. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that top resistance material
With a thickness of 150mm, during grabbing top resistance material, top resistance material points 3 times have been grabbed, grabbed thickness be followed successively by 50mm, 50mm,
50mm, every 80h are grabbed 1 time；0-100h freely cools down；The every 2h of 101-200h sprinkles water 1 time, and watering amount is 0.085L/ ㎡, every time
5 minutes；201-240h, every 1h sprinkle water 1 time, and watering amount is 0.085L/ ㎡, and 3 minutes every time.
10. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that grabbed after whole furnace 72h
First insulation material.
11. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that top resistance material
Including raw metallurgical coke and ripe metallurgical coke, the ratio of raw metallurgical coke and ripe metallurgical coke is 8:2；The granularity of raw metallurgical coke and ripe metallurgical coke
It is 15-30mm.
12. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that the first insulation material
Granularity with the second insulation material is 0.45-3mm.
13. a kind of method of coming out of the stove of isostatic pressing formed graphite product according to claim 1, which is characterized in that product is come out of the stove
Temperature is lower than 15 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN104477891A (en) * | 2014-12-05 | 2015-04-01 | 大同新成新材料股份有限公司 | Graphitizing method for isostatic graphite product |
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| CN101823707A (en) * | 2010-04-28 | 2010-09-08 | 四川广汉士达炭素股份有限公司 | Technical method for producing isostatic pressure graphite |
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| CN104386670A (en) * | 2014-04-23 | 2015-03-04 | 天津锦美碳材科技发展有限公司 | Isostatic-pressure high-purity graphite material and preparation method thereof |
| CN104016333A (en) * | 2014-05-25 | 2014-09-03 | 林前锋 | Preparation method of isostatic pressing microcrystalline graphite product |
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